Home / 945,390.42-1,304,656.47-515,685.87

Finding the Fourth Proportional to 945,390.42, 1,304,656.47 and 515,685.87

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Solution

The fourth proportional to 945,390.42, 1,304,656.47 and 515,685.87 is: 711,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,390.42 : 1,304,656.47 = 515,685.87 : x
  2. Step 2: Convert to fraction form
    945,390.42/1,304,656.47 = 515,685.87/x
  3. Step 3: Cross multiply
    945,390.42x = 1,304,656.47 × 515,685.87
  4. Step 4: Simplify right side
    945,390.42x = 672,792,906,783.08
  5. Step 5: Solve for x
    x = 672,792,906,783.08/945,390.42
  6. Step 6: Final answer
    x = 711,656.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.